/*
 * Copyright (c) 2023-2025 110476592@qq.com
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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/**
 * @file empty_painter.h
 * @brief 截图工具 
 * @author 110476592@qq.com 
 * @note   承接Qt项目外包定制开发。长期接收C++项目实训学徒,联系QQ：110476592。
 */

 
#ifndef EMPTY_PAINTER_H
#define EMPTY_PAINTER_H
#include <painter/abs_painter.h>

/**
 * @brief 什么都不绘制
 * 该类继承自 AbsPainter，用于实现找不到绘图工具时。
 */
class EmptyPainter : public AbsPainter {
  // 声明该类使用 Qt 的信号与槽机制
  Q_OBJECT
public:
  /**
   * @brief 构造函数
   * @param parent 父对象指针，默认为 nullptr
   */
  explicit EmptyPainter(QObject *parent = nullptr);

  /**
   * @brief 获取该绘制器的唯一标识符
   * @return 表示唯一标识符的整数
   */
  virtual int id() const override;

  /**
   * @brief 处理图像，执行矩形绘制操作
   * @param painter 用于绘制的 QPainter 对象
   * @param points 绘制矩形所需的点的向量
   * @param param 绘制参数对象
   */
  virtual void processImage(QPainter &painter, const QVector<QPoint> &points,
                            const DrawParam& param) override;

public slots:
  /**
   * @brief 处理按下事件的槽函数
   * 当发生按下事件时，该函数会被调用。
   */
  virtual void onPressed() override;
};

#endif
